Annealing Effects on Photocatalytic Activity of Zn_0.2Cd_0.8S Films Prepared by Chemical Bath Deposition

Abstract

Zn0.2Cd0.8S alloyed films were prepared on glass substrates at room temperature using chemical bath deposition method. The obtained films were annealed at temperatures ranging from 200°C to 500°C with heating rate of 5°C/min and annealed at 400°C with heating rate of 2°C/min and 10°C/min. The films were characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, and UV-VIS spectrophotometer. The increasing of annealing temperature increases the crystallinity and the mean grain size of Zn0.2Cd0.8S alloyed films and significantly enhances the absorption in the visible region. The efficient visible light photocatalytic activity for annealed Zn0.2Cd0.8S alloyed films is associated with the larger size grain and the higher crystallinity.

Application of visible light active photocatalysis for water contaminants: A review

“…Briefly, metal slides/flakes are placed in a chemical bath and photocatalytic deposition is encouraged forming a photocatalyst film or array. Specifically, the slides/flakes can be ordinary supporting inorganic material, like glass slides, or semiconductor material that involved photocatalysis, like TiO 2 nanoflakes (Chai et al, 2014; Kite et al, 2020; Zhou et al, 2019). Examples include WO 3 /TiO 3 array (Zhou et al, 2019), Zn 0.2 Cd 0.8 S films (Chai et al, 2014), ZnS thin films (Y. Chen et al, 2012), and FeSe thin films (Sohrabi & Ghobadi, 2019).…”